On a baking sheet with sides, toss squash, onions, sage, oil, salt
and pepper. Spread out in an even layer and roast for 15 to 20
minutes, stirring once, or until the vegetables are beginning to
brown. Toward the end of cooking, stir in Canadian bacon.

Meanwhile, cook pasta in a large pot of boiling salted water until a
dente, 8 to 10 minutes. Drain and return to the pot